Tool punch with spring actuated impact means



April 6, 1965 A. J. MARINO ETAL 3,176,399

TOOL PUNCH WITH SPRING ACTUATED IMPACT MEANS Filed Sept S0u!Illlllllllllllllilllllllllllll( United States Patent C) M' 3,176,399TL' PUNCH WHTH ySlPRlillG ACTUTED IMPACTMEANS Anthony l. Marino andAnthony M. Heldere, both' of 559 Encinitas Avet, San Biego, Calin, andAdolph Graf' von Soden, 3909 Riviera Drive, San Diego, Calif.

Filed Sept/20,1962, Ser. No. 224,976 2 Claims. (Cl. Sil-367) ybolts orstuds, also for driving nails, finish nails in cabinet work Iand dowelpins, removing pins and keys, leather stenciling, riveting and headingor" pins, rivets or the like, the use of said hand tool beingaccomplished without the useofa conventional hammer.

Acc-ordingly an object of the invention is to provide av hand tool thatmaybe made an integral part of a stapler, or be made a detachable partthereof, sothat said hand tool may he used in inaccessible places orsuch positions where the use of a conventional hammer and a tool isimpossible.

A further object of the invention is to provide said hand tool with abase having a center punch and a hingedly detachable and interchangeablescale rule, so that a measurern'ent'such as a radius may be easily takenand scribed and'also a center punch may be easily employedand applied.`

Another object of the invention is to provide said hand tool with asuitable tool bit frame whichmay be detachable orbe made an integralpartthereof, said tool bit frame having means for supporting a removablecutting tool orbit' in position when said hand tool is in use.

A further object of the invention is to provide a suitable tool bitwitha detachable chuck means adapted for regulating'and for controllingthe cutting position of said tool bit when same is in use and actuatedby the reciprocating mechanism provided in said hand tool.

Another object of the invention is to provide said hand tool with meansWhich may be reciprocal or a gear driven cam'and operableby a suitableelectrical motor, hydraulic or pneumatic unit or the like, adapted forsecuring oscillating motion for the tool bit attached thereto when inuse.`

The invention also has for its objects to provide such means that arepositive in operation, convenient in use,

. easily installed in a working position and easily disconectedtherefrom, economical in manufacture, relatively simple, and of generalsuperiority and serviceability.

Other and further objects and advantages of the invention as willhereinafter more fully appear, are attained bythe construction hereinshown on the drawings and described in the speciiication, forming a partof the application.

Reference is had to the accompanying drawings, in whichthesimilarreference characters denote the same parts.

, n In the drawings;

' FIG. 1 shows a partly fragmentary side elevational f FIG. l.

ICC

atented Apr. 6,1965

PEG. 5 shows another and a slightly enlarged and lfragmentary sectionalview of the hand tool and the hammer apparatus therein, taken on lines 55 of the FIG. 3.

F IG. 6 shows the elevational View of the chisel tool bit structure.

FIG. 7 shows the elevational View of the marking tool bit. v

FIG. 8 shows a vertically sectional view of the chuck having a chisel orcutting tool bit in position and having a detachable handle associatedtherewith for regulating the cutting position thereof when attached tosaid hand tool and in use. I

FIG. 9 shows a side elevational View of the hand tool attached to apower unit.

FG. l0 shows the top View of thehand tool connected to a power unit,taken from the-top of FG. 9.

FIG. l1 shows a sectional plan of the chuck member, showing same inrelative position to the extension handle when attached, taken on lineill- 1l or FiG. 8.

Describing the invention more in detail, in its broader aspects, saidinvention comprises an attachment for a conventional impact hammergenerally designated by numeral 2, having a base 4 provided with apivotin handle 6 including a gripping bar 8.

Said impact hammer 2 which is a spring actuating type, is provided witha front enclosure or housing 10 consisting of a frame i2 for enclosing amovable bracket 14 also having an internally extending ledge 16 adaptedfor supporting and for retaining thereon an outer spring i8 and aninternally mounted adjustable power spring 26, both of said springshaving a common top enclosure 22 provided with a threaded block or nut24 and a suitable adj ostin g screw 26.

Saidmovable bracket la is slidably mounted within the outer end of saidhousing 1t? and is also provided with an end cover 28 for supportingsaid movable bracket 14 and for holding said nut 24 in position, whilethe lower end section 30 of said end cover 28 is provided with adownwardly extending tubular guide 32 which terminates with'a threadedend 34 having a transverse slot 36 disposed at the extreme end thereof,as shown in FIG. 2.

A `hammer plate 33 is secured to said movable bracket llt which isslidably positioned between said end cover 2S and said outer end of saidhousing lt), so that a vertical movement for said hammer plate 33 may behad, also, said hammer plate is provided with a downwardly extendingendplate to which a hammer t9 is secured and adapted to4 slide within saidtubular guide 32,l as shown in FIGS. 1 and 5.

Said movable bracket 14 is also provided with a pair of inwardlyextending pawls 42 adapted for engaging a tiltably actuating pawl 4dwhich is secured in a pivot section of said frame 2 and is pivoted upona cross pin 45 and also upon which said pivoting handle 6 is pivotallymounted, said cross pin having the loop'of a spring 48 mounted thereonand wherein one extendedend of said spring is arranged to rest withinsaid gripping bar 8 and the other spring end Si? extends'to and rests atthe inner side of said'pivoting handle which is adapted for urging saidhandle into an outwardly extended position and at the same timeactuating-said pawl 44 into a downwardly tilted position, as shown inFIG. l.

The end of said tubular guide 32 is provided with a removable lockingsleeve 52 having an aperture S4 at its lowermost end and having thediameter of said aperture identical to the inside diameter of saidtubularguide 32, which are adapted for slidably retaining therein theshank upper end of a center punch 55.

The upper end of said 'tubular guide 32 is provided with a pair of crossapertures or holes 58 whichfare disposed below the end of saiddownwardly extending hammer 4t) arrests f required. 2 i1 Y Said Vcrossapertures or holes 531m respective.;

'positions are arranged to pass ,partlyinto the interior of Y andwhichare arranged for'receivingtherem a of` c the locking ends "6% ofV .alil-shaped lock'springV 62.see p EG. 4, and of which the rontwardlyentendinglended lis bent upwardly, as ,shown VinllG; 1, ,for securinganV easy removal `thereof'fremits mount said tubular guide 'Salasshownfin FG. 4, 'so that when said pairfof locking ends ed farel in.position then the inner surface-edges thereof willAengageren,annularrgroove 6e H disposed at the shankupper end '6doftvsaidcenterzpunchk 56, and thereby holding'samein nositionjwhen inuse;

It may-'be notedth'at said annular groove'led .iSfWideinx its structurefor allowing a sliding motion tor'the shank end of saidV centerpun'ch455 whenhold inposition b Y means vof, said retaining spring lockingendsdii. V .s f

Inoperation, when said hammer plate -38 is tripped-by i thedownward'action of said pivoting handle e, which y in i-ts pivotingmotionlc'auses Vsaid springs V1% and Zitto; become compressed andithenYcausing said `supportingV internal ledge 16 to become released, it willVcarry'down-v mer plate 38, and in its'downwardrmotion causing `said Yinternal ledge 16'to stop against a cross butter flth'which consists ofa pair of cross plates secured in saidfframe 12v and havinga rubber asshown. A

.j quired when inY usejri `As shown' in FIGS-9 and lpact hammerv isVmounted and held in position betvveenV Said chiselY tool 98` may alsorbeused in `connection with chuck'ltllwhichis provided with a' suitableshank eX- tensioni or`r'od 411kt-, and adapted for engagingsaidl'tubular, guide 32 inainanner as herein before provided, also, saidY chuckl 10i-may, if sodesired, be'rprovided with a pair ofsidewardlyfpositioned 'apertures 3106 and which are 4', adapted 'forengaging vthe end prongs 1ii7 of an vextension handieltls, sothatthe'po'sition ofthe Vcutting blade of iclv chisel-'tool 98Vrnay becontrolledv and* directedv or re- 10,"said housing Z of said imi j a`pair of brackets or plates 112 and 11d,r respectively,.hav

wardly saidmovable bracketll togetherwithrsaid hamk ing said tubularguide 32 extended longitudinally asshown,

if Vand in structure and: assembly saidrirnpactfhanimer is ar-V rangedto havesaid tiltablej'pawls 44 ofthe mechanism to be connectedrltoy anextensionV rod jor bar 115 which is ylayer 'Zpositioned therebetween, Y

When pivoting'said handle 6 thenzsaid'hammer 4t) is raised accordinglyand released and forced downwardly against Vthe shank .upper end e8 ofsaid center punch 56, and, when it is desired to increase,A the force of` impact against said bracket VMythen said adjusting screw 26' isadapted for connecting al conventional motion converter Vthat is alsoVVspeed:` reducing and yoscillating unit 11S, and

which in operaticn'is actuated by a suitable conventional power motor.120 that issupported and Iheld in placeand position by means of saidbrackets 112 and, 114, asshown.

It may be noted thatrsaid motor 12) may be a suitable i (electricallyoperable unit, orsaid motor maybe pneumatic forced downwardly againstthe adjustable innenpower v spring 20, so that a greater penetration ofthe point end 76 of said center punch 56 may behad. f

For securing suitable measurements ofa distance when using the centerpunch 56 and when measuring or marking a radius, angles or the like,"thelower edge vofsaid base 4 Y i throughoutra vviderange.V

is provided vwith a pair ot tubular eyelets 7Sfand 4d() that aredisposed at each side thereof, 'respectively seevFlG. 2, to which atiltable and removable bracket plateV $2 Vis at-V jtached, which isinterchangeable and adaptedfor mounting same in position at either sideof saidba'selI and arranged to be held in place by Ymeans ofsuitablelocating pins 84,Y and'which are secured Vin placeV byw means of asuitable flexible member such aschain or the like, for

'Y preventing same from becomingilost or damaged.

lSaid tiltable and removable bracketplate d2 is pivotally and removablymounted as shown, and the tubular eyelets at each side of said base4fprovide'means'for using said removable bracket plate $2 vat the' VsidedesiredV and or hydraulicY type, so thaty in useV saidrirnpact hammerde-Vice 2 may be operated in a conventional manner and f' using saidinterchangeable tools as in practice vmay be'most desirable.-

s While this invention is described' herein with great par-v ticularity,it will be yclear'thatr'the `sameV may be modied -Accordingly, itis notproposedV thatrthis invention: be

limited )to the exact-details of construction herein-shown mostconvenient 4for the user, that may ,be right handed or left handed,also, said'removable bracket plate 82 is v provided with` an angularlyextending .retainer S6 having a longitudinal slot 88 whereinY a suitablescale or measur-y Y ing rule 90 isslid'ablyjandadjustablyl positionedand heldk in place by means of a fasteningscrew 92 for holding saidscaleor measuringV rule in'- any ytended position.

desired longitudinally yeX-l` *A When in use, saidscale or'measuringrule 90y may be surfaces or plates and without Vthe uses'of aconventional hammer, and also, allowing said impact hammer-2 device tobe used in close quarters ory crowded'places for making center punchmarks or. the like. Y l Y used for measuring lengths and distancesbetween points, a

radius of a circle may be scribed and punched upon steel.

l,on theV drawings anddescribedginthe speciication, and

therefore,reservati0ns of'the ,n'ghtsrinnpractice arel made,

' to the, end thatnecessary changes andvrnodications may f be had, whichmaycome Withinthe scope of the appended claims. Y We clairn as ourinvention: .Y

Y1. `In a hand tool impact', device of the class described having aframe, a base in said frame,a front enclosure secured 'insaidfr'ame anda pivotally movable handle connected to said frame; a Vmovablebracket'lslidably mounted inV said front enclosure, Va hammer platemounted on said movable Vbracket.extending Ydownwardly vtherefrom andterminatingV in a vhamr'ner,y an internal ledge at [the bottom rend voflsaid'movable ,bracket extending internally intosaid frame, a topenclosure disposed at the Ntop of said frontfenclosure extending intoand blending with said frame; a threaded nut supportedby said topenclosure and lying inclose proximity to the vtopi of saidfrontenclosure; van outerr impact spring mountedl between and V'carriedby said internal ledg'eof 'said movable bracket and disposed against theinner side of said top enclosure,

an inner powerV spring positioned within said outerimpact spring, anVadjusting'screw adjustably engaging said j threaded nut and engagingsaidvinner power spring for adjusting anY impact forcefto ysaidmovable'bracket including fWhen sa'idtubular guide 32 of said device isprovided Y 'Y with a pin punch'95 as shown'inFIG.,7, Vandfheld inplace-J7` when actuatingsaid movablyand pivotally mounted han@Vdlethefcombination of, a tubular guide kextending down-Y in the mannerherein before provided, said pin punch 9-3 may be Yused-in cabinet'work'for driving'rsmall and finish nails intoposition, and for performingother operations thatmay be `found adaptable Vin practice. V Also, said-tubular 'guide 32mray bek providedl with a said anvil associatedtherewith, said movable bracket and said'pivotally movable handle'having a sety of Vplavvl-means for-providing a tripping action forsaidrmovable bracket wardly from said vfront enclosure,`said tubularguide having a threaded end sectionY and a 'plurality of transverselyrcult slots at theend thereof, a" locking sleeve secured on saidthreaded end of said tubular guide, a pair of aperktures passing throughsaid front enclosure and said tubular guide, a center punch toolremovably and interchangeably disposed in said tubular guide andsupported by said lockn jing sleeve when in position, a shank upper endin said `center punch tool disposed in close proximity to and againstthe end of said hammer, an annular groove in said shank upper end, saidannular groove disposed in close proximity to said pair of apertures insaid front enend by said hammer and when said set of pawl means aretripped by the action of said pivotally movable handle of said hand toolimpact device.

2. In a hand tool impact hammer device of the class describedcomprising, a frame having a base including a front enclosure, a topenclosure in said front enclosure, a pivot section in said frame havinga pivotally movable handle mounted therein and held in pivotal positionby a cross pin mounted in said frame, a movable bracket slidably mountedin said front enclosure of said frame and also having a hammer connectedto and downwardly extending therefrom, said movable bracket furtherincluding a pair of inwardly extending pawls and an inwardly extendingledge, a set of impact springs supported between said inwardly extendingledge and said top e11- closure, tripping pawls mounted on said crosspin and tiltably associated with said pivotally movable handle at saidpivotal section of said frame for engaging said inwardly extending pawlsand for tripping said movable bracket and thereby carrying with adriving force said movable bracket and said hammer, Ithe combination of,a tubular guide having a threaded end extending downwardly from saidfront enclosure of said frame for guiding said hammer therein, aremovable center punch slidably mounted in said tubular guide having an.annular groove at the shank upper end thereof and disposed below saidhammer, a locking sleeve engaging said threaded end of said tubularguide for supporting said center punch in position, and a U-shaped lockspring means in said tubular guide and said front enclosure of saidframe for engaging said annular groove and thereby holding said centerpunch in position.

References Cited by the Examiner UNITED STATES PATENTS 2,558,403 6/51Wandel 144.1 2,762,435 9/56 Morris et al. 30-267 2,834,116 5/58 Hambrick33-189 2,855,693 10/58 Holsten 33--189 2,917,747 12/59 Marano 1-49WILLIAM FELDMAN, Primary Examiner. MILTON S. MEHR, Examiner. 'y j

1. IN A HAND TOOL IMPACT DEVICE OF THE CLASS DESCRIBED HAVING A FRAME, A BASE IN SAID FRAME, A FRONT ENCLOSURE SECURED IN SAID FRAME AN A PIVOTALLY MOVABLE HANDLE CONNECTED TO SAID FRAME; A MOVABLE BRACKET SLIDABLY MOUNTED IN SAID FRONT ENCLOSURE, A HAMMER PLATE MOUNTED ON SAID MOVABLE BRACKET EXTENDING DOWNWARDLY THEREFROM AND TERMINATING IN A HAMMBER, IN INTERNAL LEDGE AT THE BOTTOM END OF SAID MOVABLE BRACKET EXTENDING INTERNALLY INTO SAID FRAME, A TOP ENCLOSURE DISPOSED AT THE TOP OF SAID FRONT ENCLOSURE EXTENDING INTO AND BLENDING WITH SAID FRAME; A THREADED NUT SUPPORTED BY SAID TOP ENCLOSURE AND LYING IN CLOSE PROXIMITY TO THE TOP OF SAID FRONT ENCLOSURE; AN OUTER IMPACT SPRING MOUNTED BETWEEN AND CARRIED BY SAID INTERNAL LEDGE OF SAID MOVABLE BRACKET AND DISPOSED AGAINST THE INNER SIDE OF SAID TOP ENCLOSURE, AN INNER POWER SPRING POSITIONED WITHIN SAID OUTER IMPACT SPRING, AN ADJUSTING SCREW ADJUSTABLY ENGAGING SAID THREADED NUT AND ENGAGING SAID INNER POWER SPRING FOR ADJUSTING AN IMPACT FORCE TO SAID MOVABLE BRACKET INCLUDING AND ANVIL ASSOCIATED THEREWITH, SAID MOVABLE BRACKET AND SAID PIVOTALLY MOVABLE HANDLE HAVING A SET OF PAWL MEANS FOR PROVIDING A TRIPPING ACTION FOR SAID MOVABLE BRACKET WHEN ACTUATING SAID MOVABLY AND PIVOTALLY MOUNTED HANDLE, THE COMBINATION OF, A TUBULAR GUIDE EXTENDING DOWNWARDLY FROM SAID FRONT ENCLOSURE, SAID TUBULAR GUIDE HAV- 